Delta Says Margins Remain Solid

Delta Air Lines Inc., which expects to earn $1.1 billion this year, said its fourth-quarter operating margin should be between 6% and 8%, an improvement from a projection given in October.

At an investor-day event, the Atlanta-based carrier also said it will cut its fourth-quarter capacity by 4% to 5% compared with the year-ago period, part of its continuing campaign to match its supply with demand. The carrier's unit revenue—the...